Posted: 3/30/2015 2:42:59 PM EDT
|
For all in tents and porpoises, let's say there is zero wind on the range.
Your zeroed at 100 yards, your shot is 4" low at 400. Each click= 1/4 moa. Do you adjust your scope so that you are 4" high at 100 (16 clicks) Or do you only adjust up 4 clicks? Eta Your target is not on a treadmill. Nor are there any magnets on the range And you were not blind the whole time Oh and you are using the gun from heat |
|
4 clicks, as that would equal 4" at 400 yards. 4" at 100 yards would be x4 at 400.
think about a right triangle, bottom leg is line of sight through the scope, top leg is line of the bore of the barrel, and the verticle leg is the target. MOA = the angle between the two legs. distance to target is the length of the bottom leg. |
|
Quoted:
Oh, I don't know, if the height above bore is 10 or 12 inches or so........... 
Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 Oh, I don't know, if the height above bore is 10 or 12 inches or so...........
I had written "Unless you've got some seriously tall scope rings". But I figured that might not be understood by some in the thread.
|
|
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 300RUM is reputed to be close to 4" at 400 yards with a 195gr bullet. I've seen published figures of between 4.2 and 4.9 inches, although most of what I've seen in real life is a little over 5 inches firing 185gr Black Tips. |
|
Quoted:
http://www.nosler.com/news-and-articles/2013/11/22/the-26-nosler 0-415 yards PBR Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 http://www.nosler.com/news-and-articles/2013/11/22/the-26-nosler 0-415 yards PBR PBR depends on how big a target you wish to hit. When they say "On at 350 and PBR of 415, that means that it will be low @ 415 the same amount as the highest point of trajectory. Let's say it was about 5 inches high at about 250 (just rough estimations without looking up the exact data for that cartridge). You could then aim at the center of a 10 inch target and theoretically hit it out to 415 yards. Even that laser isn't going to come close to on @100 and -4" @400. |
|
Quoted:
300RUM is reputed to be close to 4" at 400 yards with a 195gr bullet. I've seen published figures of between 4.2 and 4.9 inches, although most of what I've seen in real life is a little over 5 inches firing 185gr Black Tips. Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 300RUM is reputed to be close to 4" at 400 yards with a 195gr bullet. I've seen published figures of between 4.2 and 4.9 inches, although most of what I've seen in real life is a little over 5 inches firing 185gr Black Tips. That's height of trajectory (which is still impressive) being theoretically 4" if zeroed at 400 yards. I had a .300 RUM and it was a beast. Still. The question in the OP has the gun zeroed at 100. There's going to be much more drop than one MOA at 400. |
|
Quoted:
That's height of trajectory (which is still impressive) being theoretically 4" if zeroed at 400 yards. I had a .300 RUM and it was a beast. Still. The question in the OP has the gun zeroed at 100. There's going to be much more drop than one MOA at 400. Quoted:
Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 300RUM is reputed to be close to 4" at 400 yards with a 195gr bullet. I've seen published figures of between 4.2 and 4.9 inches, although most of what I've seen in real life is a little over 5 inches firing 185gr Black Tips. That's height of trajectory (which is still impressive) being theoretically 4" if zeroed at 400 yards. I had a .300 RUM and it was a beast. Still. The question in the OP has the gun zeroed at 100. There's going to be much more drop than one MOA at 400. It was a hypothetical example. |
|
Quoted:
It was a hypothetical example. Quoted:
Quoted:
Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 300RUM is reputed to be close to 4" at 400 yards with a 195gr bullet. I've seen published figures of between 4.2 and 4.9 inches, although most of what I've seen in real life is a little over 5 inches firing 185gr Black Tips. That's height of trajectory (which is still impressive) being theoretically 4" if zeroed at 400 yards. I had a .300 RUM and it was a beast. Still. The question in the OP has the gun zeroed at 100. There's going to be much more drop than one MOA at 400. It was a hypothetical example. True 
|
|
Quoted:
That's height of trajectory (which is still impressive) being theoretically 4" if zeroed at 400 yards. I had a .300 RUM and it was a beast. Still. The question in the OP has the gun zeroed at 100. There's going to be much more drop than one MOA at 400. Quoted:
Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 300RUM is reputed to be close to 4" at 400 yards with a 195gr bullet. I've seen published figures of between 4.2 and 4.9 inches, although most of what I've seen in real life is a little over 5 inches firing 185gr Black Tips. That's height of trajectory (which is still impressive) being theoretically 4" if zeroed at 400 yards. I had a .300 RUM and it was a beast. Still. The question in the OP has the gun zeroed at 100. There's going to be much more drop than one MOA at 400. I don't have the load info handy for these..but I wonder if they wouldn't come close? 300 RUM using 125 grain barnes solid at if I remember right just shy of 4000FPS(I loaded these years ago for fur bullets )... 
|
|
Quoted:
I don't have the load info handy for these..but I wonder if they wouldn't come close? 300 RUM using 125 grain barnes solid at if I remember right just shy of 4000FPS(I loaded these years ago for fur bullets )... <a href="http://s266.photobucket.com/user/AKSNOWRIDER_2008/media/Pictures/b23a8ae8-86a2-41c0-b781-b467299114eb_zps1heevlfl.jpg.html" target="_blank">http://i266.photobucket.com/albums/ii265/AKSNOWRIDER_2008/Pictures/b23a8ae8-86a2-41c0-b781-b467299114eb_zps1heevlfl.jpg</a> Quoted:
Quoted:
Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 300RUM is reputed to be close to 4" at 400 yards with a 195gr bullet. I've seen published figures of between 4.2 and 4.9 inches, although most of what I've seen in real life is a little over 5 inches firing 185gr Black Tips. That's height of trajectory (which is still impressive) being theoretically 4" if zeroed at 400 yards. I had a .300 RUM and it was a beast. Still. The question in the OP has the gun zeroed at 100. There's going to be much more drop than one MOA at 400. I don't have the load info handy for these..but I wonder if they wouldn't come close? 300 RUM using 125 grain barnes solid at if I remember right just shy of 4000FPS(I loaded these years ago for fur bullets )... <a href="http://s266.photobucket.com/user/AKSNOWRIDER_2008/media/Pictures/b23a8ae8-86a2-41c0-b781-b467299114eb_zps1heevlfl.jpg.html" target="_blank">http://i266.photobucket.com/albums/ii265/AKSNOWRIDER_2008/Pictures/b23a8ae8-86a2-41c0-b781-b467299114eb_zps1heevlfl.jpg</a> You can plug it into the online JBM ballistics calculator and get a good estimate. Or you can do some math and get TOF between 100 and 400 and then figure for 32 fps^2 drop. As mentioned, with a high enough scope, you could get it to work out, I think but it would be impractical.
|
|
Quoted:
You can plug it into the online JBM ballistics calculator and get a good estimate. Or you can do some math and get TOF between 100 and 400 and then figure for 32 fps^2 drop. As mentioned, with a high enough scope, you could get it to work out, I think but it would be impractical. Quoted:
Quoted:
Quoted:
Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 300RUM is reputed to be close to 4" at 400 yards with a 195gr bullet. I've seen published figures of between 4.2 and 4.9 inches, although most of what I've seen in real life is a little over 5 inches firing 185gr Black Tips. That's height of trajectory (which is still impressive) being theoretically 4" if zeroed at 400 yards. I had a .300 RUM and it was a beast. Still. The question in the OP has the gun zeroed at 100. There's going to be much more drop than one MOA at 400. I don't have the load info handy for these..but I wonder if they wouldn't come close? 300 RUM using 125 grain barnes solid at if I remember right just shy of 4000FPS(I loaded these years ago for fur bullets )... <a href="http://s266.photobucket.com/user/AKSNOWRIDER_2008/media/Pictures/b23a8ae8-86a2-41c0-b781-b467299114eb_zps1heevlfl.jpg.html" target="_blank">http://i266.photobucket.com/albums/ii265/AKSNOWRIDER_2008/Pictures/b23a8ae8-86a2-41c0-b781-b467299114eb_zps1heevlfl.jpg</a> You can plug it into the online JBM ballistics calculator and get a good estimate. Or you can do some math and get TOF between 100 and 400 and then figure for 32 fps^2 drop. As mentioned, with a high enough scope, you could get it to work out, I think but it would be impractical. Yep..it aint got enough balls..aprox. 13" of drop with a 100 zero at 400... with a 1.5 scope centerline...Dang it..I failed...
|
|
Quoted:
what does your drop table say? You did do one for your load right? Ha..I haven't even seen these bullets in 10 + years until this winter....and everything the Ex could get her hands on when we split...well...I might should have went to the dump I guess.....but who knew... 
|
|
Quoted:
I had written "Unless you've got some seriously tall scope rings". But I figured that might not be understood by some in the thread. Quoted:
Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 Oh, I don't know, if the height above bore is 10 or 12 inches or so...........
I had written "Unless you've got some seriously tall scope rings". But I figured that might not be understood by some in the thread. 
|
|
Quoted:
Quoted:
Quoted:
Quoted:
I don't know of a firearm that can be on at 100 and 4 inches low at 400 Oh, I don't know, if the height above bore is 10 or 12 inches or so...........
I had written "Unless you've got some seriously tall scope rings". But I figured that might not be understood by some in the thread. http://www.everydaynodaysoff.com/wp-content/uploads/2015/03/Dual-Sight-System-Ballistics-Info.jpg Dang, what do you use for a cheek weld, the bottom of your chin? |